High temperature pipeline refers to the transportation of high temperature and high pressure metal, thermal engineering pipeline. Under the environment of energy conservation and emission reduction, nano aerogel felt is adopted for heat preservation, and the extremely low volume density and the curved path of the nano network structure prevent the heat conduction in gas state and solid state, block the heat transfer path, and the heat insulation effect is very good.
Potassium sulfate is the main chlorine-free potash fertilizer in agriculture. Mannheim method is a method for preparing potassium sulfate from potassium chloride and sulfuric acid. at present, the production process is the most mature. The method has the advantages of high grade of potassium sulfate ( w ( K2O ) 50 % ~ 51 % ), little loss and high yield of potassium. So the potassium sulfate reaction furnace is also called mannheim furnace.
α - Al2O3 single crystal is also called sapphire, commonly known as corundum, is a simple coordination type oxide crystal. It is made up by proces alumina powder with purity ov 99.99 %, and its growth process is in ultra-high temp. furnace, which is called sapphire furnace according to its application, and is divide into sapphire growth furnace and sapphire annealing furnace according to its use temp., also called crystal growth furnace and crystal annealing furnace.
The factors to be considered in the heat preservation of methanol conversion furnace are furnace type, furnace temperature, heating mode and furnace atmosphere. Furnace type mainly has top burning square box type, side burning double chamber type, small cylinder type, etc.; Equipment fuel is generally natural gas plus casting gas, clean, sulfur content is not higher than 50 ppm; The radiant section is operated under micro negative pressure ( - 5 ~ - 10 mmh2o ) and the maximum design temperature of the hot surface is 1260 ℃. Weak reducing flue gas atmosphere in the furnace.
Cracking furnace is one of the key equipments in ethylene plant. the furnace type is bottom burning + side burning box heating furnace. The structure generally consists of two parts. The upper part is convection section and the lower part is radiation section. The radiation section is equipped with vertical furnace tube, is the heating reaction part of hydrocarbon, furnace tube design temperature is 1100 ℃. Cracking furnace burner is generally distributed in the bottom of the furnace and side wall parts, radiation section of the furnace temperature is generally 1260 ℃, furnace atmosphere for weak reducing atmosphere.
The tunnel kiln flat ceiling comprises a straight kiln flat ceiling and a parallel kiln flat ceiling, wherein the ceramic fiber flat ceiling is used for heat preservation construction on the tunnel kiln roof to prepare a light tunnel kiln refractory fiber lining.
Mobile tunnel kiln, also known as ring tunnel kiln, referred to as ring kiln; The heat preservation of tunnel kiln is divided into preheating zone, sintering zone and cooling zone along the length direction of kiln.
Tunnel kiln is a modern industrial kiln which is widely used in building materials, ceramics and refractory industry, and is a kind of thermal equipment for continuous production. According to the firing temperature can be divided into low temperature tunnel kiln ( 1000 ~ 1350 ℃ ), medium temperature tunnel kiln ( 1350 ~ 1550 ℃ ), high temperature tunnel kiln ( 1550 ~ 1750 ℃ ) and ultra-high temperature tunnel kiln ( 1750 ~ 1950 ℃ ).
Glass tempering furnace, also known as glass tempering equipment, usually uses the physical method to heat the glass to near the softening point ( 650 ℃ ), blowing quenching, forming compressive stress layer on the surface of the glass, forming tensile stress layer inside; When the glass is subjected to an external force, the compressive stress layer can cancel part of the tensile stress.
Glass furnaces are divided into crucible furnace, intermittent furnace and continuous furnace.